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1 answer:
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Answer:
t = 7 sec.
Explanation:
As the car and the truck travel the same distance, assuming a constant acceleration, we can describe the movement of the truck and the car with these equations for this same displacement:
x(truck) = v*t (1)
x(car) =
As the left sides of (1) and (2) are equal each other, the same must be true for the right sides:
v*t =
Solving for t, replacing v= 10.5 m/s and a= 3 m/s², we have:
⇒ t = 7 sec.